This is an AR app for the picture book " Kyoryu has appeared! ".
When you start the app and hold it over the corresponding page of the picture book, you can see the dinosaurs popping out from the picture book.

If you don't have a picture book, you can try the dinosaur that pops out by holding the app over the sample image.
Try holding the app over a smartphone or PC that displays a sample image, or printed paper.

Click here for sample images
https://books.note-buddy.com/dino001/sample.jpg

Picture books can be purchased from the EC site, etc., or from the following
https://books.note-buddy.org/dino001/